Hydrogen permeable membrane and hydride battery composition

• US 6,576,350 B2
• Filed: 05/14/2002
• Issued: 06/10/2003
• Est. Priority Date: 11/09/1998
• Status: Expired due to Fees

• Current Assignee: Robert E. Buxbaum
• Original Assignee: Robert E. Buxbaum
• Inventors: Buxbaum, Robert E.
• Primary Examiner(s): Koehler, Robert R.
• Application Number:
  US10/145,273
• Publication Number:
  US 20020127426A1
• Time in Patent Office: 392 Days
• Field of Search: 428/670, 428/570, 428/655, 428/689, 428/469, 420/416, 420/900, 429/218.2
• US Class Current: 428/670
• CPC Class Codes: B01D 2325/04 Characteristic thickness
• CPC Class Codes: B01D 67/0069 by deposition from the liquid phase, e.g. electrochemical deposition B01D67/0046 takes precedence
• CPC Class Codes: B01D 71/0221 Group 4 or 5 metals
• CPC Class Codes: B01D 71/0223 Group 8, 9 or 10 metals
• CPC Class Codes: B01D 71/02231 Palladium
• CPC Class Codes: B01D 71/02232 Nickel
• CPC Class Codes: B32B 15/01 all layers being exclusively metallic making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00
• CPC Class Codes: B32B 15/018 one layer being formed of a noble metal or a noble metal alloy
• CPC Class Codes: C01B 3/505 Membranes containing palladium
• CPC Class Codes: C22C 27/02 Alloys based on vanadium, niobium, or tantalum
• CPC Class Codes: H01M 4/383 Hydrogen absorbing alloys
• CPC Class Codes: H01M 8/0662 Treatment of gaseous reactants or gaseous residues, e.g. cleaning
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y10S 428/923 Physical dimension
• CPC Class Codes: Y10T 428/12438 Composite
• CPC Class Codes: Y10T 428/12493 Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
• CPC Class Codes: Y10T 428/12729 Group IIA metal-base component
• CPC Class Codes: Y10T 428/12771 Transition metal-base component
• CPC Class Codes: Y10T 428/12806 Refractory [Group IVB, VB, or VIB] metal-base component
• CPC Class Codes: Y10T 428/12819 : Group VB metal-base component
• CPC Class Codes: Y10T 428/12875 : Platinum group metal-base component

Abstract

A hydride battery electrode is coated with palladium or a palladium alloy to improve hydride storage properties and recycle characteristics. A hydrogen purification membrane including a metallic substrate likewise has improved properties upon coating with palladium and a surface species of an alkali metal, alkaline earth element or alkaline earth cation. Novel metal hydrogen purification membranes include vanadium alloyed with at least 1 to 20 atomic percent nickel and/or 1 to 20 atomic percent cobalt and/or 1 to 20 atomic percent palladium.

Claims

1. A hydride battery electrode comprising:

an intermetallic core of LaNi_4.7Al_0.3; and

a coating on said core having a surface, said coating selected from a group consisting of;

palladium and palladium alloys.

2. The hydride battery electrode of claim 1 wherein said coating has a thickness greater than 50 nanometers.

3. The hydride battery electrode of claim 1 further comprising an alkali metal salt deposited on the surface.

4. A hydride battery electrode comprising:

an intermetallic core of Mm_0.95Ti_0.05Ni_0.85Co_0.46Mn_0.36Al_0.35; and

a coating on said core having a surface, said core selected from a group consisting of;

palladium and palladium alloys.

5. The hydride battery electrode of claim 4 wherein said coating has a thickness greater than 50 nanometers.

6. The hydride battery electrode of claim 4 wherein said coating further comprises an alkali metal salt deposited on a surface.

7. A hydride battery electrode consisting essentially of:

an intermetallic core selected from a group consisting of LaNi_4.7Al_0.3 and Mm_0.95Ti_0.05Ni_0.85Co_0.46Mn_0.36Al_0.35; and

a coating on said core selected from a group consisting of;

palladium and palladium alloys.